| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 70e - Unglaciated Upper Muskingum Basin |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 44622 - Dover, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 19 | 27 | 36 | 46 | 56 | 60 | 58 | 51 | 39 | 32 | 23 | 39 |
| Avg Max Temp (°F) | 35 | 39 | 49 | 61 | 72 | 80 | 84 | 83 | 76 | 64 | 51 | 40 | 61 |
| Avg Precip (In.) | 2.63 | 2.34 | 3.16 | 3.5 | 3.96 | 4.19 | 4.18 | 4.12 | 3.21 | 2.48 | 3.07 | 2.91 | 39.75 |